I just finished R-Type 1 (Jap hucard), and found out theres a HARD mode.
Apologies if this is common knowledge, but I had no idea. I finished the 4 levels on 1 life (no deaths), then after the ship lands in the mothership, I got the code as per usual, but then pressed RUN. (if you lose a credit you don't seem to get this option to press RUN).
I then started on level 1 with the two orbs (no force) and homing missiles. And the game got much harder, for example:
End of level 1 boss fired bullets from his tail.
Tentacle brains on level 2 take tonnes of bullets to kill.
The flying green sperms on level two seem to have been breeding, there are loads of them.
The front gun/rocket on level 3's ship is damn hard to kill.
The turrets at the back of the ship regenerate (like Amiga version).
The mine layers on level 4 pump out lots of bullets.Arg - and YAY all at once!
One grumble - it's a shame when you put your code into R-type 2 that you don't launch from the mothership again.
Also - I haven't been able to clock rtype1 through twice yet (on 1 life) - wonder if theres a super hard mode?