Overall, I cannot stress enough not to buy this game at $40 for the Wii U, unless you're ok with what is basically a portable game being packaged as a full console experience. If Nintendo re-releases this game for the 3DS for $20, go for it. If you see it in a bargain bin for $5, go for it. But whatever you do, don't spend more than that.
From a first glance, Shadwen should be pretty great. Everything seems to look good and gives the impression that this game is totally finished. Then you make it past the first area and you quickly realize that Frozenbyte hasn't learned anything from their Trine 3 experience. Shadwen could be a promising game. There's a lot of potential with time manipulation, and if they could fix the AI this might even be worth a playthrough. But as it presently stands, I can't recommend this game.
Overall, Elex had a lot of promise, but it's amalgamation of settings and mechanics do nothing positive for the game. With an utter nonsense mix of weapons, enemies, and settings, Elex might have been a decent game...for 2007. Unfortunately, it seems like Piranha Bytes still hasn't learned from their various mistakes with Risen 3. As it is now, there's simply no reason to try it unless you're a diehard Piranha Bytes fan.
Submerged could have been interesting. It could have offered a nice challenge, a good setting, a good story, but it did none of these things. Submerged ended up being so samey and monotonous that it isn't really worth playing through when you realize the first half hour is what the entire game is.
Infernium is certainly something else. It's not quite the Souls-like, Survival Horror Pac-man game the developer thinks it is, and it's certainly not something that's all that well put together. If you like running away from the same 2 enemy models with slightly different colors, don't mind the absolute lack of story beyond bad fan-fiction on random walls, and like dying to enemies around the corner, you'll love Infernium. Otherwise, it's best to stay away.
I've been contemplating the best way to word this part of my review, and I just have to think being blunt and forward is the best way to go. This game is mediocre. It's a nice first try at a game, and the story of it is pretty great, but everything else falls so short I'm forced to simply say unless you're a big fan of indie games and you don't care about quality, don't bother playing this game.