From my personal Steam Game Rankings, here are some games I recommend that are >= 50% off

FTL: Faster Than Light

Super Meat Boy

Devil Daggers

Downwell

Super Amazing Wagon Adventure

The Swapper

Primordia [GOG]

Beat Hazard [GOG]

Noita [GOG]

SOMA [GOG]

Hedon Bloodrite

Batman Arkham City [GOG]

30XX

Super Kiwi 64

Pikuniku [GOG]

Hollow Knight [GOG]

Kero Blaster [GOG]

Receiver 2

Gunlocked

The Messenger [GOG]

CRYPTARK [GOG]

Parking Garage Rally Circuit

Gato Roboto [GOG]

Tetrobot and Co [GOG]

From my personal Steam Game Rankings, here are some games I recommend that are >= 50% off

https://store.steampowered.com/app/212680/FTL_Faster_Than_Light/

https://store.steampowered.com/app/40800/Super_Meat_Boy/

https://store.steampowered.com/app/422970/Devil_Daggers/

https://store.steampowered.com/app/360740/Downwell/

https://store.steampowered.com/app/250500/Super_Amazing_Wagon_Adventure/

https://store.steampowered.com/app/231160/The_Swapper/

https://store.steampowered.com/app/227000/Primordia/

https://store.steampowered.com/app/49600/Beat_Hazard/

https://store.steampowered.com/app/881100/Noita/

https://store.steampowered.com/app/282140/SOMA/

https://store.steampowered.com/app/1072150/Hedon_Bloodrite/

https://store.steampowered.com/app/200260/Batman_Arkham_City__Game_of_the_Year_Edition/

https://store.steampowered.com/app/1029210/30XX/

https://store.steampowered.com/app/1949960/Super_Kiwi_64/

https://store.steampowered.com/app/572890/Pikuniku/

https://store.steampowered.com/app/367520/Hollow_Knight/

https://store.steampowered.com/app/292500/Kero_Blaster/

https://store.steampowered.com/app/1129310/Receiver_2/

https://store.steampowered.com/app/1512480/Gunlocked/

https://store.steampowered.com/app/764790/The_Messenger/

https://store.steampowered.com/app/344740/CRYPTARK/

https://store.steampowered.com/app/2737300/Parking_Garage_Rally_Circuit/

https://store.steampowered.com/app/916730/Gato_Roboto/

https://store.steampowered.com/app/235980/Tetrobot_and_Co/