can you request Newgrounds games so you can speed run them. the worlds hardest game is flash only so idk.

You can request them once your account is old enough. No guarantees they'll be accepted, but some are.

Bear in mind you can always speedrun them regardless of there being a leaderboard on here; I've run a few NG games with no leaderboard myself.

There's already a good amount of flash games on here, I'm sure some are on newgrounds. If not, they tend to be on flashpoint.

All web games that came out in the last 2-3 years are not Flash games anyway.