After half an hour with Forager, I can already feel its compulsion loops getting their hooks into my brain. Developed by HopFrog and released today, it’s a cute single-player game about a little pixel-person mining and crafting and looting in perpetuity, continually escalating spirals of numbers, equipment and levels. There’s land to buy (full of resources), dungeons to delve (full of gold to buy land) and monsters to blat (full of components to craft into other things to make things faster). If the launch trailer (and free demo) below is any indication, those loops stretch on a long way.
Most modern PC or console games take from one to three years to complete, where as a mobile game can be developed in a few months. The length of development is influenced by a number of factors, such as genre, scale, development platform and number of assets.
Some games can take much longer than the average time frame to complete. An infamous example is 3D Realms' Duke Nukem Forever, announced to be in production in April 1997 and released fourteen years later in June 2011. Planning for Maxis' game Spore began in late 1999; the game was released nine years later in September 2008. The game Prey was briefly profiled in a 1997 issue of PC Gamer, but was not released until 2006, and only then in highly altered form. Finally, Team Fortress 2 was in development from 1998 until its 2007 release, and emerged from a convoluted development process involving "probably three or four different games", according to Gabe Newell.