The game was released with eight playable characters, though more have been added through free updates.

The current shareware program is version 4.0 and on registration you receive free updates for life.

Rovio Mobile has supported their games with many free updates that add more features and levels.

Good marks for the software and free updates; points lost for inconsistent performance.

Each license included technical support and free updates for one year.

The content was announced to be staggered across several free updates, rather than in one major update.

Periodic free updates are released as content patches on an average of three per month since the game's release.

Chair Entertainment has released four expansions as free updates to the game.

For example, Sony sent technicians out to homes to make the necessary updates free of charge.

Most programs come with free updates for a year, and then require a subscription fee.