The original Adventures of Crackhead Jack turns nine years old on May 14! To celebrate, the Steam Deck-supported Overdose Edition released almost five years ago now is on sale for 60% off as part of Steam Weeklong Deals until May 19.
https://store.steampowered.com/app/1328500/'
https://steamcommunity.com/games/1328500/announcements/detail/5310346223909415352
If you enjoy the game's music, I suggest you get the Game + OST bundle - all of those sales go towards the artists.
https://store.steampowered.com/bundle/16428/