Our new Indie Games subforum is now open for business in G&T. Go and check it out, you might land a code for a free game. If you're developing an indie game and want to post about it, follow these directions. If you don't, he'll break your legs! Hahaha! Seriously though.
Our rules have been updated and given their own forum. Go and look at them! They are nice, and there may be new ones that you didn't know about! Hooray for rules! Hooray for The System! Hooray for Conforming!
This is kind of tangential to the topic, but touches it just enough to be relevant.
Please, fellow game developers. Please. If you are developing a metroidvania, remember the cardinal rule of the genre: the player must always be able to go back and get everything. Ori and the Blind Forest violates this rule; if you zig instead of zag at certain points, you'll trigger a scripted sequence and an auto-save that locks you out of certain areas that might contain items that count toward 100% completion and oh my fuck it is so annoying.
If I can stop one future metroidvania game from making this boneheaded mistake by saying that here, then I have to. Seriously. If you're going to track completion percent, let the player go back and pick up everything.
Honestly, at some point every concept hits a saturation point. Trainsawlaser is at that point, in my opinion; putting aside limits imposed by the engine, I'm not sure it's got much more concept space to grow into, and that's fine.