Few survey sites pay out in Robux directly — most pay cash or gift cards you convert yourself. Here is the landscape ranked by how fast a Roblox player actually ends up with Robux.
1. Dedicated Robux survey sites (fastest)
Sites like FreeRBX that pay straight to gamepasses skip the conversion hop entirely: earn points, withdraw Robux, done. Minimums are Robux-denominated (200 R$ here) so you always know where you stand. The tradeoff is smaller survey inventory than giant GPT sites.
2. Big GPT sites + Roblox gift cards
Swagbucks-style platforms with Roblox gift-card redemptions work fine but add friction: higher cash minimums ($5–10), card stock that runs out, and manual code redemption. Better inventory, slower last mile.
3. Direct survey panels (cash, then buy)
Prolific and similar panels pay the best per minute — but in cash via PayPal, with 16–18+ age gates and limited seats. Great if you qualify; overkill if you just want gamepass money.
What to avoid
Any 'Robux survey' site asking for your password, charging verification fees, or promising thousands daily. Those three filters eliminate 95% of scams before you waste an hour.