Why is Windows Security freaking out over the .exe? It just shut down the game and moved it to quarantine, claiming it is trojan:win32/Bearfoos.B!ml
No such issues here, it's a false positive. Most likely because it's the newest Ren'Py version which doesn't have the .exe whitelisted or something. Here's the VirusTotal report confirming that it's clean (Android build due to size limitation).