PC Engine version's special features
There is a new stage6 boss in PCE version of R-Type (stage2 in PCE R-Type2):
There is also a little new detail in final end sequence:
A nice little boss (crushed:() from 3 level of R-Type...
And, there is nice sequence in the end of PCE R-Type1 (first half of original R-Type):
You can download ready-to-watch savegames' pack of all this PCE special Features HERE.
Just copy them into catalog of Magic Engine, start emulator, load R-Type2 (or R-Type1 for half-game end sequence), start the game and press F5 or F6 or F7 or F8 (each one for its own slot).