R-Type series

• R-Type
• R-Type II
• Super R-Type
• R-Type Leo
• R-Type III: The Third Lightning
• R-Type Delta
• R-Type Final
• R-Type Final 2

Spin-offs: The two R-Type title spin-offs are not SHUMP games, but turn-based tactics games.

• R-Type Tactics/R-Type Command
• R-Type Tactics II: Operation Bitter Chocolate

The following Irem titles are canonically related to the R-Type universe.

• Mr. HELI no Daibōken/Battle Chopper
• Image Fight
• X-Multiply
• [[Armed Police Unit Gallop/Cosmic Cop ]]
• Image Fight 2