A sub-series called ACA Neo Geo[b] focuses on re-releasing Neo Geo titles in their original arcade format, unlike many services that attempt to emulate the console versions.

It supports various system-specific features, allowing players to share screenshots and videos and compete with others for online rankings.

[2] ACA Neo Geo games were released on iOS (via the App Store) and Android (via Google Play) on November 30, 2021.

[3] In May 2024, Hamster announced ACA2 Neo Geo[c] for PlayStation 5 and Xbox Series X/S.

Main features of standard ACA2 Neo Geo games include Time Attack and Network (online play) modes.