Yes absolutely! AFAIK most, if not all games use modularity to some degree since it's the most optimal use of geometry in a game engine. The art with modularity comes about with how complex an artist can make it appear while avoiding tileability. Like this example. It's a pretty fun challenge actually.
I just viewed the example and wow, it really helped. Thank you so much for this! I love the tutorial. I would like to share that I love how war robots was created. The 6v6 multiplayer action is a good feature and I find it cool that the robots can fit in the palm of your hand or in your pockets. Very handy. The wide selection of robots is pretty great as well plus you can customize it however your want. You can either go on battle alone or with a team. The massive selection of weapons, including ballistic missiles, plasma cannons, and giant shotguns allows you to gain an advantage over your enemies. I could go on and on about its features but the last thing I'd say is that you can download war robots to enjoy a lag-free game.