Deluxe Ski Jump games in order

All 4 games of the Deluxe Ski Jump series in the order they came out, from Deluxe Ski Jump (1999) to Deluxe Ski Jump 4 (2011).

1. 
   Deluxe Ski JumpDOS
   4 Jul
2. 
   Deluxe Ski Jump 2DOS, Android, iOS
   31 Aug
3. 
   Deluxe Ski Jump 3PC
   31 Oct
4. 
   Deluxe Ski Jump 4PC
   21 Jan