Uses Flash Lite to let partners offer browser-based mobile gameplay.
The UK firm, which provides content delivery systems for operators and media organisations, has launched GoPlay as part of its GoMedia platform.
It says games can be offered free/ad funded, or via a low cost subscription (typically between €1-2 per month) for unlimited access.
Users browse the GoPlay portal to select a game, which is then launched immediately in a mobile internet session for instantaneous play.
Multiple games can be played in a single session, without having to download large files to be stored on the device.
MoMac has aggregated around 30 games from its development partner, Booster Media, and others. It expects to add up to 30 more games per quarter. The launch catalogue includes brain trainers, arcade, action and puzzle games.
GoPlay is also loaded with community features such as the ability to upload scores, send games to friends and (in phase two) challenge friends.
MoMac expects the first casual games portal to go live on in October.
Sham Careem, MD of MoMac UK, said: “Casual games on the web continue to go from strength to strength, and we believe that the mobile medium offers even greater potential.
"The difficulties with the Java games model is well documented, whilst the huge success of simple, low price, casual games on the iPhone shows there is great potential for a new type of game experience.”