I think it's mostly renpy games, but at the moment I'm getting a lot of failing executables when I click launch. You can boot the exe from the parent directory, but in client I'm getting this. I'm not sure what 127 is but this seemed like the relevant segment of the log:

[2016-09-30 @ 22:04:26.840] [tasks/launch] itch 18.10.1 launching game 58824: One Night Stand
[2016-09-30 @ 22:04:26.840] [tasks/launch] looking for manifest @ [EditedPath]\Roaming\itch\apps\One Night Stand\.itch.toml"
[2016-09-30 @ 22:04:26.841] [tasks/launch] No manifest found (no '.itch.toml' file in top-level directory). Proceeding with heuristics.
[2016-09-30 @ 22:04:26.842] [tasks/launch] looking for UE4 prereq setup
[2016-09-30 @ 22:04:26.847] [tasks/launch/native] cave location: "appdata/One Night Stand"
[2016-09-30 @ 22:04:26.848] [tasks/launch/native] no manifest action picked
[2016-09-30 @ 22:04:26.848] [launch/poker] initial candidate set: [
 {

Any ideas on how I can fix this?