Hey, haven't seen you in a minute. Some of those games are little surprising to see physical releases. I know some indie games have gotten physical releases in the recent years but didn't expect to see Retro City and a few others on the list.
Retro City is (will be!) available through the developer's website (vblank.com) - which is what I'm really loving about some of these releases!! These self-published titles will have a great deal of care put into them (I think!) - and since they'll likely be a limited run, will probably hold a greater value... :)