Hello,
here is my idea (Please DO NOT steal it :))))), I am thinking to make several simple games for web with unity, clones of well known games, but with a coop or multiplayer feature. Example are games similar gamemechanics-wise to arcanoid, mario , contra. Is it worth the effort nowadays? What’s your opinion? Maybe you have a better idea? Where is the train going?
I always dislike it if games have no coop or only local coop.
I know it is a lot of effort to plan games with coop and even make it online, but there should be way more coop games out there.
However i don’t think it’s worth the effort for you to make coop games of existing games.
First of all, if you really want to make a clone and add multiplayer (clones like using the same graphics, etc), its not legal anyway so you would waste your time.
If you just want to make games like xyz, thats fine and im looking forward to it 
I would really love to see more hack n slash online coop games (coop = play through main story together), like torchlight with MP, but there are not a lot out there (yet). But of course that’s a lot of work.
I see, thanks for the reply. I did not mean making a complete clone, obviously I want to avoid all copyright issues. Just gamemechanic-wise, means a platformer, top-down scrolling shooter, adventure, survival game, and even simlified diablo like hack and slash