Jingle jam is a yearly donation drive by the streamer / youtube group yogscast where every year one can get different amounts of game codes for a minimum donation of 35$. I donated twice this year, so these codes are available. try em until january when they get disabled, or donate yourself today, only 6 hours left):

Edit: added * in front of entries that have been reported as claimed

* Another Crab’s Treasure
Adventure, undersea, whimsical
Redemption Key: 7253Z-8RVJT-9RT87

* Citizen Sleeper
Sci-fi, narrative, survival
Redemption Key: NH76D-48B24-C4MCJ

* Death Sprint 49976
Racing, dystopian, fast-paced
Redemption Key: 5V0I0-RL847-YJ4K0

* Dungeons & Degenerate Gamblers
Fantasy, gambling, rogue-like
Redemption Key: Z0QHX-IIEAE-PJ5R4

* Eternights
Romantic, action, apocalypse
Redemption Key: QH2ZV-QLDGF-Y9549

* Fights in Tight Spaces
Tactical, action, strategy
Redemption Key: FQA7Y-X4NK9-M9PFM

* For the King 2
Strategic, cooperative, adventure
Redemption Key: G7ER9-7IKZK-EQVCH

* Frostpunk
Survival, dystopian, city-builder
Redemption Key: DQIKG-IWQFA-GWK8P

Hadean Tactics
Card-battle, strategy, roguelike
Redemption Key: 4X4YH-6ITGX-47R84

* Mars First Logistics
Exploration, construction, space
Redemption Key: Y0V4T-KV2ZL-NY70I

* Orcs Must Die 3
Tower-defense, fantasy, action
Redemption Key: 6W5X6-KLEPT-943MN

* Patrick’s Parabox
Puzzle, recursive, logic
Redemption Key: H27VE-ZGVBH-A2RQ4

Scorn
Atmospheric, horror, surreal
Redemption Key: 2CMVB-X9J2T-ZLN3J

Shadows of Doubt
Noir, detective, immersive
Redemption Key: GPJZW-9PITD-C736Q

Sticky Business
Entrepreneurial, management, creative
Redemption Key: 39CYX-XWBFX-NRJWL

Submachine: Legacy
Mystery, puzzle, exploration
Redemption Key: 36LQ0-6YD2H-GAWJI

* Two Point Campus
University, simulation, management
Redemption Key: TRE5D-ETIVL-FQFYI

* Wildfrost
Frosty, tactical, roguelike
Redemption Key: 5WR3D-TZ4EN-VC7JH

NON STEAM:

Displate (Metal Posters)
40% off discount code
Redemption Key: EKC5AD19

MCC Island (Minecraft addon)
MCC Island Jingle Jam Rewards Pack
Redemption Key: JJ24-GY9V-J3CJ-DK34

Fanatical Wheel Spin (Gambling, do not recommend)
spin to win
Redemption Key: RC8d79WfRdK9Hc