We are preparing an article about MPAGD for BrewOtaku #004, we hope it will raise your interested in providing some updates and features again :)
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As an update, we have just opened a limited audience beta for the new MPAGD support for Vic 20. And two games for Vic 20 made with MPAGD are arleady available to play and download: B-Squared Vic-20 by kamaleon70 and slASHer ViC 20 by ZXAMAZE