I'm a web developer, I have experience coding in Ruby,PHP, javascript and Go. I've always been a gamer and I'd love to get my hands dirty in some game development. I'm horrible when it comes to artwork so going solo is not an option. I'd love to help out on any projects people have running if they would have me.
Career change or just wetting the old beak?
Either way you've got tons of options. I would suggest grabbing a subscription to one of the more full featured tool sets like udk or unity, not an impenetrable learning curve and you should be up and running with some gameplay experiments pretty rapidly.
Don't worry about art, focus on making small but engaging mechanics... Could be really simple stuff like bouncing a ball... If it's fun to play for a few minutes layer in some additional stuff like time pressure, obstacles etc if that makes sense to you.
I started out by attending a game design program and then worked for a number of developers for the last 10 yrs. it's not all fun in games. Hrs are long as hell when your getting close to ship. You likely won't get to work on what you want but that's life for most ppl.
Anyway if you had any questions I would be happy to throw my 2 cents in
