On the App store you can currently purchase several highly rated iOS games for 50% off. All apps are universal, meaning they will play on your Apple TV, iPhone and iPad with a single purchase. None of these games contain in-app purchases, so once you buy it you have the full game, no need for add-ons or DLC.
I've had my eye on Chrono Trigger for a while but could never justify the usual price, but this seems more reasonable for such a classic game. The game is also compatible with MFi controllers so you can play with a normal gamepad rather than using onscreen touch controls.
Here are a few other games that are also worth picking up at their current prices:
Games compatible with Apple TV (4th gen and up), iPhone and iPad:
Chrono Trigger: $7.99 was $14.99 https://itunes.apple.com/au/app/chrono-trigger-upgrade-ver/i…
Broken Age: $1.49 was $7.99 https://itunes.apple.com/au/app/broken-age/id887649233
Alto's Adventure: $0.99 was $2.99 https://itunes.apple.com/au/app/altos-adventure/id950812012
Alto's Odyssey: $0.99 was $7.99 https://itunes.apple.com/au/app/altos-odyssey/id1182456409
Games compatible with iPhone and iPad only
Grim Fandango Remastered: $1.49 was $7.99 https://itunes.apple.com/au/app/grim-fandango-remastered/id9…
Oddworld New and Tasty: $2.99 was $7.99 https://itunes.apple.com/au/app/oddworld-new-n-tasty/id10901…
Oddworld Stranger's Wrath: $2.99 was $4.49 https://itunes.apple.com/au/app/oddworld-strangers-wrath/id9…
Oddworld Munch's Oddysee $2.99 was $4.49 https://itunes.apple.com/au/app/oddworld-munchs-oddysee/id10…
Don't forget 4.90% back through Cash Rewards
Probably my favourite game ever.