This still isn't ideal, as the game gets forgotten, hidden away in the Unknown Sources menu, and without the nice icon display.
Having it installed via App Lab makes it show up in the game menus like any other and imo is a much more professional appearance.
It doesn't matter how up to date the Unknown Sources version is if I rarely go in there, especially with App Lab now starting to offer a wider range of games. Tbh, I'd probably have put more than a cursory few games into Crisis VRigade if it wasn't so hidden.
It's the sort of game my wife excels at in the arcade, but she's not going to rummage round an odd backwater text menu when there are more accessible games to choose.
Honestly, I'm slightly surprised you weren't among the first to offer App Lab keys given the reputation of your game.