CGI elements were integral to Knightmare, even during its early years. The creators would eventually revert to a full CGI dungeon for the final series.
CGI composites were introduced as early as Series 3 for transitions such as the early Dwarf Tunnels and the Minecart Tunnel to Level 3.
It was mostly reserved for puzzles during the middle years of Knightmare but returned in force for Series 7 with a new Rift Valley and the technomagical environment of Goth.
For the final series, the creators moved to a fully computer-generated dungeon. This made it possible to recycle dungeon rooms more efficiently. CGI videos were also used for Eyeshield sequences between rooms.