I highly recommend the Alien Armageddon mod on moddb. All the original levels are retouched and everything is just a little bit better while keeping with the spirit of the game.
Duke 3d
Sonic 3 & Knuckles.
Day of the Tentacle is the best! And! It includes Maniac Mansion in the game!
I'll save you 20 minutes. Launch it from Steam's Big Picture mode.
I highly recommend the Alien Armageddon mod on moddb. All the original levels are retouched and everything is just a little bit better while keeping with the spirit of the game.