Secret Files games in order

All 4 games of the Secret Files series in the order they came out, from Secret Files: Tunguska (2006) to Secret Files: Sam Peters (2013).

1. 
   Secret Files: TunguskaPC, Wii, DS +4 · Animation Arts
   724 Sep
2. 
   Secret Files 2: Puritas CordisPC, DS, Wii +3 · Animation Arts
   7129 Aug
3. 
   Secret Files 3PC, iOS, Android +1 · Animation Arts
   7013 Sep
4. 
   Secret Files: Sam PetersPC, iOS, Android +1 · Animation Arts
   705 Sep