After testing and rating a few dozen games, I found a few hidden gems. Without talking too much, here are my favorite games which you should totally check out!

1. Corrupted: https://ldjam.com/events/ludum-dare/39/corrupted This game is very simple but the concept is genius and it is executed very well. It's a lot of fun.
2. The Visible City: https://ldjam.com/events/ludum-dare/39/the-visible-city Beautiful, simple, fun and highly original.
3. ZETPACK-99: https://ldjam.com/events/ludum-dare/39/zetpack-99 Simple puzzle game that uses the theme in a very original way.
4. Towers of Morale: https://ldjam.com/events/ludum-dare/39/tower-of-morale Another simple but great puzzle game.

All these game are definitely worth your time, give them the attention they deserve!