These games are quick to play and are very close to 20 ratings

https://ldjam.com/events/ludum-dare/51/gridlock

https://ldjam.com/events/ludum-dare/51/office-time-loop-and-the-end-of-the-world

https://ldjam.com/events/ludum-dare/51/10-seconds-old

https://ldjam.com/events/ludum-dare/51/sweetheart-speedrun

https://ldjam.com/events/ludum-dare/51/dimension-rush