Active giveaways at the moment, for no particular reason!:

https://www.steamgifts.com/giveaway/6xJ78/anomaly-2
https://www.steamgifts.com/giveaway/Oz3SK/slime-san <--- You are here
https://www.steamgifts.com/giveaway/UtZMN/undertale
https://www.steamgifts.com/giveaway/WRLva/super-rude-bear-resurrection
https://www.steamgifts.com/giveaway/bUpFq/gonner-press-jump-to-die-edition
https://www.steamgifts.com/giveaway/OvWgD/thoth
https://www.steamgifts.com/giveaway/HIxk3/action-henk
https://www.steamgifts.com/giveaway/2oACL/out-of-the-park-baseball-17
https://www.steamgifts.com/giveaway/WJjAQ/pirate-pop-plus
https://www.steamgifts.com/giveaway/xaVvs/broforce

Good luck and don't forget to have fun!