Credits

Mathematics Games and Spelling Games

Additional Content

Some content is licensed from the following sources:

Players
Triangle Space Ship - CC-BY 4.0 - https://opengameart.org/content/top-down-spaceships
[LPC] Horses Artist: bluecarrot16 License: OGA-BY 3.0. Reworked by Jordan Irwin (AntumDeluge) - http://opengameart.org/content/lpc-horses.
Red Dragon - CC-BY 3.0 - Credits to http://www.buko-studios.com/ Commissioned by PlayCraft: www.playcraftapp.com - https://opengameart.org/content/red-dragon - Changed colour.
Police Car - By clayster2012 - OGA-BY 3.0 - https://opengameart.org/content/police-cars

Entities
Explosion - CC-BY 3.0 - https://opengameart.org/content/pixel-explosion-12-frames
Laser Fire Sound - CC-BY 3.0 - by dklon. https://opengameart.org/content/laser-fire
Asteroid - CC-BY 3.0 - https://opengameart.org/content/asteroid-m
Flowers by Peony - CC-BY- 3.0 - https://opengameart.org/content/plants-and-flowers-pixel-art
Bombada - CC-BY- 3.0 - http://www.lostdecadegames.com/
Fruit - https://www.freepik.com/free-vector/fruits-berries-game-icons-casino-app-pc_24076162.htm#page=4&query=fruit&position=49&from_view=search - Image by upklyak on Freepik

Effects
Freeze Spell - CC-BY 3.0 - https://opengameart.org/content/freeze-spell
Icicle Spell - CC-BY 3.0 - https://opengameart.org/content/icicle-spell
Fire - by Santoniche - CC-BY 4.0 - https://opengameart.org/content/magic-blue-fire - Changed colour and added to entity.

Enemies
Spaceships - CC-BY 4.0 - By MillionthVector - http://millionthvector.blogspot.com/2012/12/spaceship-fighter-concepts.html
Spaceships - CC-BY 4.0 - By MillionthVector - http://millionthvector.blogspot.com/2013/01/more-top-down-spaceship-concepts.html
Spaceships - CC-BY 4.0 - By MillionthVector - http://millionthvector.blogspot.com/2013/07/free-alien-top-down-spaceship-sprites.html
Spaceships - CC-BY 4.0 - By MillionthVector (http://millionthvector.blogspot.de) - https://opengameart.org/content/set-faction10-spacestations
Set: Faction3 spaceships - CC-BY 3.0 - By MillionthVector (http://millionthvector.blogspot.de) - https://opengameart.org/content/set-faction3-spaceships
The Kraken - SVG illustration with paintover - CC-BY 4.0 - Concept art, vector - Chris Hildenbrand Painting - Nathan Lovato - https://opengameart.org/content/the-kraken-svg-illustration-with-paintover

Backgrounds
Underwater - OGA-BY 3.0 - https://opengameart.org/content/underwater-world-parallax-backgrounds
Rainbow - https://www.freepik.com/vectors/background - Background vector created by freepik - www.freepik.com
Archery Background - https://www.freepik.com/vectors/background - Background vector created by brgfx - www.freepik.com
Winter themed abstract backgrounds- CC-BY 3.0 - Code Inferno (www.codeinferno.com) - https://opengameart.org/content/winter-themed-abstract-backgrounds
Planet Orbit Background - OGA-BY 3.0 - https://opengameart.org/content/planet-orbit-background
Ice and Electricity Magic - CC-BY 3.0 - by Iwan qubodup Gabovitch http://opengameart.org/users/qubodup
Ice Cream Shop - https://www.freepik.com/vectors/restaurant-cartoon - Restaurant cartoon vector created by upklyak - www.freepik.com
Sweet Shop - https://www.freepik.com/vectors/sweet-shop - Sweet shop vector created by upklyak - www.freepik.com
Nevada - https://www.freepik.com/vectors/nevada - Nevada vector created by vectorpouch - www.freepik.com
Realistic Galaxy - http://www.freepik.com - Designed by pikisuperstar / Freepik
A farm with a barn - http://www.freepik.com - Designed by ddraw / Freepik
Park landscape scene- https://www.freepik.com/vectors/cartoon-garden - Cartoon garden vector created by brgfx - www.freepik.com
Kid’s birthday party - https://www.freepik.com/vectors/birthday-cartoon - Birthday cartoon vector created by upklyak - www.freepik.com
Rubgy Field - https://www.freepik.com/vectors/stadium-background - Stadium background vector created by macrovector - www.freepik.com
Candy Shop - https://www.freepik.com/vectors/shop-counter - Shop counter vector created by upklyak - www.freepik.com
Roads - https://www.freepik.com/vectors/district - District vector created by tartila - www.freepik.com
Bank - https://www.freepik.com/vectors/bank-vault - Bank vault vector created by upklyak - www.freepik.com
Bank - https://www.freepik.com/vectors/bank-safe - Bank safe vector created by vectorpocket - www.freepik.com
Lab - https://www.freepik.com/vectors/lab-room - Lab room vector created by upklyak - www.freepik.com
Genetic Lab - https://www.freepik.com/vectors/genetic-engineering - Genetic engineering vector created by vectorpocket - www.freepik.com
Savannah - https://www.freepik.com/vectors/park-background - Park background vector created by brgfx - www.freepik.com
Home - https://www.freepik.com/vectors/online-chat - Online chat vector created by upklyak - www.freepik.com
Home 2 - https://www.freepik.com/vectors/house-inside - House inside vector created by upklyak - www.freepik.com
Castle - https://www.freepik.com/vectors/castle-background - Castle background vector created by upklyak - www.freepik.com
Nefertiti - https://www.freepik.com/vectors/nefertiti - Nefertiti vector created by upklyak - www.freepik.com
Pyramid - https://www.freepik.com/vectors/bedouin - Bedouin vector created by upklyak - www.freepik.com
Scarab Door - https://www.freepik.com/vectors/pharaoh - Pharaoh vector created by upklyak - www.freepik.com
Mummies - https://www.freepik.com/vectors/halloween - Halloween vector created by pikisuperstar - www.freepik.com
Baskets - https://www.freepik.com/vectors/wicker-basket - Wicker basket vector created by pch.vector - www.freepik.com
Treasure box - https://www.freepik.com/vectors/treasure-box - Treasure box vector created by pch.vector - www.freepik.com
Hieroglyphics - https://www.freepik.com/vectors/pharaoh - Pharaoh vector created by macrovector - www.freepik.com
Pharoah - https://www.freepik.com/vectors/pharaoh - Pharaoh vector created by upklyak - www.freepik.com
Aztec Temple - https://www.freepik.com/vectors/moai Moai vector created by upklyak - www.freepik.com
Palace - https://www.freepik.com/vectors/palace - Palace vector created by upklyak - www.freepik.com
White robots - https://www.freepik.com/vectors/robot - Robot vector created by freepik - www.freepik.com
Throne Room - https://www.freepik.com/vectors/king-throne - King throne vector created by vectorpocket - www.freepik.com
Stone Textures - https://www.freepik.com/vectors/cobblestone - Cobblestone vector created by upklyak - www.freepik.com
Castle Wall - https://www.freepik.com/vectors/fortress - Fortress vector created by vectorpocket - www.freepik.com
Clone Room - https://www.freepik.com/vectors/clone - Clone vector created by vectorpouch - www.freepik.com
Candy Land - https://www.freepik.com/vectors/candy-land - Candy land vector created by freepik - www.freepik.com
Lolly houses - https://www.freepik.com/vectors/caramel - Caramel vector created by macrovector - www.freepik.com
Planet - https://www.freepik.com/vectors/space-game - Space game vector created by upklyak - www.freepik.com
Swamp - https://www.freepik.com/free-vector/night-forest-landscape-cartoon-mysterious-fantasy_25917857.htm#page=3&query=swamp&position=41&from_view=search - Image by upklyak on Freepik
Swamp - https://www.freepik.com/free-vector/night-forest-landscape-with-secret-pond-neon-glowing-trees-fantasy-nature-cartoon-background-with-calm-lake-with-moonlight-reflection-surface-wild-beautiful-scenery-wood-vector-illustration_25978405.htm#page=3&query=swamp&position=1&from_view=search - Image by upklyak on Freepik
Dungeon - https://www.freepik.com/vectors/dungeon - Dungeon vector created by upklyak - www.freepik.com
Cloning Lab - https://www.freepik.com/vectors/clone - Clone vector created by vectorpouch - www.freepik.com
Dinosaur Land - https://www.freepik.com/free-vector/steaming-volcanoes-cartoon-volcanic-background_8433471.htm#query=dinosaurs&position=8&from_view=search - Image by upklyak on Freepik
Dinosaur Land - https://www.freepik.com/free-vector/prehistoric-landscape-with-volcano-mountains-lake-palm-trees_13524065.htm#query=volcano%20land&position=0&from_view=search - Image by upklyak on Freepik
Pet Shop - https://www.freepik.com/free-vector/pet-shop-interior-domestic-animal-store-with-counter-desk-accessories-food-cat-dog-houses-toys-tin-cans-shelves-inner-view-petshop-supermarket-with-nobody-cartoon-illustration_13453698.htm#page=2&query=pet%20shop&position=8&from_view=search - Image by upklyak on Freepik
Pet Shop - https://www.freepik.com/free-vector/empty-pet-shop-interior-with-no-people-petshop-banner-cartoon-concept-parrot-cage-fish-aquarium-counter-domestic-animal-feed-toys-sale-business_25273330.htm#query=pet%20shop&position=17&from_view=search - Image by studio4rt on Freepik
Forest Clearing - https://www.freepik.com/free-vector/blank-nature-park-landscape-scene-daytime_15951769.htm#page=3&query=forest&position=24&from_view=search - Image by brgfx on Freepik
Pirate Ship - https://www.freepik.com/free-vector/wooden-ship-deck-with-view-pirate-boat-sea_25693993.htm#query=pirate%20ship&position=20&from_view=search Image by upklyak on Freepik
Pirate Deck - https://www.freepik.com/free-vector/pirate-ship-wooden-deck-onboard-view-with-cannon_7741553.htm#query=pirate%20ship&position=16&from_view=search Image by upklyak on Freepik
Pirate Cabin - https://www.freepik.com/free-vector/pirate-captain-ship-cabin-interior_6690930.htm#query=pirate%20ship&position=46&from_view=search Image by vectorpouch on Freepik
Treasure Cave - https://www.freepik.com/free-vector/treasure-cave-with-golden-coins-chest-wooden-barrel-crystal-gems-crown-sword-pile-gold-goblet-with-precious-rocks-ancient-fantasy-magic-tomb-mine-cartoon-vector-illustration_11049646.htm#query=pirate%20ship&position=44&from_view=search Image by upklyak on Freepik
Ocean - https://www.freepik.com/free-vector/realistic-beautiful-sea-view-summer-vacation-concept_2438179.htm#query=beach&position=1&from_view=search Image by katemangostar on Freepik

Scene Items
Maya Images - href=https://www.freepik.com/vectors/maya Maya vector created by macrovector - www.freepik.com
Tools - href=https://www.freepik.com/vectors/trowel - Trowel vector created by pch.vector - www.freepik.com
Ice cream - https://www.freepik.com/vectors/snack - Snack vector created by freepik - www.freepik.com
Treasure - https://www.freepik.com/vectors/treasure - Treasure vector created by upklyak - www.freepik.com
Keys - https://www.freepik.com/vectors/golden-key - Golden key vector created by freepik - www.freepik.com
Safari Gear - https://www.freepik.com/free-vector/safari-set-icon-set_4279300.htm#page=3&query=africa%20animals&position=9&from_view=search - Image by macrovector on Freepik
Dog Toys - https://www.freepik.com/free-vector/cartoon-style-pet-shop-supermarket-dog-cat-litter-house-play-tree-toys-grooming-tools-food-pack_11464181.htm#query=dog%20toys&position=7&from_view=search - Image by user15245033 on Freepik
Fruit - Image by https://www.freepik.com/free-vector/hand-drawn-fruit-collection_13685672.htm#page=2&query=fruit&position=30&from_view=search - Freepik
Pirate Ship Items - https://www.freepik.com/free-vector/vector-set-icons-pirate-ship-equipment_6993844.htm#query=pirate&position=42&from_view=search Image by upklyak on Freepik
Pirate Items - https://www.freepik.com/free-vector/set-pirate-items-cartoon-icons-vector-illustration_21133841.htm#query=pirate&position=14&from_view=search Image by upklyak on Freepik

Scene Characters
Drones - https://www.freepik.com/vectors/drone-delivery - Drone delivery vector created by freepik - www.freepik.com
Children - https://www.freepik.com/vectors/boy-icon - Boy icon vector created by brgfx - www.freepik.com
Children - https://www.freepik.com/vectors/black-boy - Black boy vector created by pch.vector - www.freepik.com
Unicorn - https://www.freepik.com/vectors/unicorn-pattern - Unicorn pattern vector created by freepik - www.freepik.com
Bacteria - https://www.freepik.com/vectors/bacteria-icon - Bacteria icon vector created by upklyak - www.freepik.com
Virus - https://www.freepik.com/vectors/wuhan - Wuhan vector created by freepik - www.freepik.com
Monsters - https://www.freepik.com/free-vector/cute-monsters-vector-set-cartoon-style-alien-cartoon-character-creature-collection-fun-illustration_10602805.htm#query=monsters&position=3&from_view=search - Image by macrovector on Freepik
Dragon - https://www.freepik.com/vectors/cartoon-dragon - Cartoon dragon vector created by brgfx - www.freepik.com
African Animals - https://www.freepik.com/free-vector/cartoon-wild-animals-zoo-safari-park-set_29222718.htm#query=africa%20animals&position=39&from_view=search - Image by upklyak on Freepik
African Animals - https://www.freepik.com/free-vector/set-various-african-animals_23813831.htm#page=3&query=africa%20animals&position=24&from_view=search - Image by brgfx on Freepik
Dinosaurs - https://www.freepik.com/free-vector/set-different-dinosaur-cartoon-character-isolated-white-background_12735667.htm#query=dinosaurs&position=3&from_view=search - Image by brgfx on Freepik
Pets - https://www.freepik.com/free-vector/different-pets-concept_7970801.htm#query=pet%20shop&position=14&from_view=search - Image by pikisuperstar on Freepik
Tiger - https://www.freepik.com/free-vector/cute-tiger-character-wild-animal-mascot-different-poses-vector-set-cartoon-funny-kitten-sleep-play-think-walking-greeting-happy-baby-tiger-isolated-white-background_25581764.htm#query=tiger%20cat&position=2&from_view=search Image by upklyak on Freepik

Sounds
Sci-Fi Sound Effects Library - CC-BY 3.0 - Little Robot Sound Factory - www.littlerobotsoundfactory.com - https://opengameart.org/content/sci-fi-sound-effects-library
UI Sound Effects - Some of the sounds in this project were created by ViRiX Dreamcore soundcloud.com/virix. - CC-BY 3.0 - https://opengameart.org/content/ui-and-item-sound-effect-jingles-sample-2
Weapon Power - CC-BY 3.0 - https://opengameart.org/content/4-sci-fi-menu-sounds
Platform Jumping Sounds - CC-BY 3.0 - https://opengameart.org/content/platformer-jumping-sounds
Fire Spell - CC-BY 3.0 - https://opengameart.org/content/fire-evil-spell
Level up sound effects - by bart - CC-BY 3.0 - https://opengameart.org/content/level-up-sound-effects
Breaking Bottle - by spookymodem - CC-BY 3.0 - https://opengameart.org/content/breaking-bottle

Music
Boss Music - CC-BY 3.0 - Music by Matthew Pablo http://www.matthewpablo.com - https://opengameart.org/content/space-boss-battle-theme
Lively Meadow - CC-BY 3.0 - Music by Matthew Pablo http://www.matthewpablo.com - https://opengameart.org/content/lively-meadow-victory-fanfare-and-song
Dream Raid Pack - CC-BY 3.0 - Music by Matthew Pablo http://www.matthewpablo.com - https://opengameart.org/content/dream-raid-cinematic-action-soundtrack
One - CC-BY 3.0 -  https://opengameart.org/content/one
Ice Cave - CC-BY 4.0 - https://opengameart.org/content/ice-cave
Lava Area Theme - CC-BY 4.0 - https://opengameart.org/content/lava-area-theme
Production=Lif - CC-BY 3.0 - https://opengameart.org/content/productionlife
Swamp 01 - CC-BY 4.0 - www.fantasymusica.org 
Desert 01 - CC-BY 4.0 - www.fantasymusica.org 
The God Slaying Shovel - by Scrabbit - CC-BY 4.0 - https://opengameart.org/content/the-god-slaying-shovel
On My Way - by Dan Knoflice - CC-BY 4.0 - https://opengameart.org/content/on-my-way
Happy Pixie Town - by HitCtrl - CC-BY 3.0 - https://opengameart.org/content/hitctrl-happy-pixie-town
Roll Up - by Yubatake - CC-BY 3.0 - https://opengameart.org/content/roll-up
Polyverse Title - By Botanic - CC-BY 3.0 - https://opengameart.org/content/polyverse-title
Eric Taylor’s Free-Music Pack - Modified - CC BY 4.0 - https://opengameart.org/users/fearlessleader

Tiles
Red Rubble - CC-BY 3.0 - https://opengameart.org/content/seamless-space-rocks-textures-pack-512px
Desert Topdown Tileset - CC-BY 3.0 - By LudicArts.com - http://www.ludicarts.com/free-videogame-asset-desert/
Free Volcano Platform Tileset - CC-BY 3.0 - By LudicArts.com - http://www.ludicarts.com/free-volcano-platform-tileset/

Icons
Help icon (https://icons8.com/icons/set/help) by Icons8 (https://icons8.com)
Portal icon (https://icons8.com/icons/set/portal) by Icons8 (https://icons8.com)
Slide Up icon (https://icons8.com/icons/set/circled-chevron-up) by Icons8 (https://icons8.com)
Circle icon (https://icons8.com/icons/set/circled) by Icons8 (https://icons8.com)
Speed icon (https://icons8.com/icons/set/speed) by Icons8 (https://icons8.com)
Target icon (https://icons8.com/icons/set/define-location) by Icons8 (https://icons8.com)
Pause Button icon (https://icons8.com/icons/set/circled-pause) by Icons8 (https://icons8.com)
Circled Play icon (https://icons8.com/icons/set/circled-play) by Icons8 (https://icons8.com)
Home icon (https://icons8.com/icons/set/home) by Icons8 (https://icons8.com)
Mute icon (https://icons8.com/icons/set/mute) by Icons8 (https://icons8.com)
Geography icon (https://icons8.com/icons/set/geography) by Icons8 (https://icons8.com)
Wi-Fi icon (https://icons8.com/icons/set/wifi) by Icons8 (https://icons8.com)
Finish Flag icon (https://icons8.com/icons/set/finish-flag) by Icons8 (https://icons8.com)
Trophy icon (https://icons8.com/icons/set/trophy) by Icons8 (https://icons8.com)
Eye icon (https://icons8.com/icons/set/eye) by Icons8 (https://icons8.com)
Game Controller icon (https://icons8.com/icons/set/controller--v2) by  Icons8
Teacher icon (https://icons8.com/icons/set/teacher) by Icons8 (https://icons8.com)
Parenting icon (https://icons8.com/icon/25474/parenting) by Icons8 (https://icons8.com)
Graduation Cap (https://icons8.com/icon/11173/graduation-cap) icon by Icons8 (https://icons8.com)
Choice icon (https://icons8.com/icon/XiIGrcdIL4RS/choice) by Icons8 (https://icons8.com)