OBS Spin Wheel Overlay for Stream Giveaways

Transparent background or chroma key?

OBS Studio and Streamlabs Desktop draw browser sources with real transparency, so the wheel sits on top of your game or camera with nothing around it. That is the default and the best option: edges stay sharp and there is nothing to tune.

Some setups can't do that: streaming apps that capture a browser window rather than using a browser source, hardware switchers, or a second PC that receives the wheel over a capture card. For those, set Background to Green screen in the builder. The page then fills with a solid chroma-key green, and you add a Chroma Key filter (OBS: right-click the source, Filters, +, Chroma Key) to cut it out. Wheel colors include greens, so if slices start disappearing, switch to Magenta screen and set the key color to magenta.

Running a chat giveaway on stream

1. Announce the keyword and the rules. For example: "Type !join in chat before 9pm to enter, one entry per person, must be following." Pin the rules in chat.
2. Collect entries with your bot. Nightbot, StreamElements, Streamer.bot and Twitch's own tools can collect the names of everyone who typed the keyword. Copy that list when entries close.
3. Paste and copy the URL. Paste the names into the builder above (one per line), copy the URL and update the Browser source. For big lists, save a wheel on the main page and use its link instead, so the URL stays short.
4. Spin live. Use Interact to spin. The winner banner appears with confetti and hides itself after the delay you chose.
5. Prove it. Clip the spin, and for extra trust run the same list on the contest winner picker and post the result link it creates, which shows the list, entry count and time.

There is no built-in chat command that spins the wheel by itself: the person running the stream always presses Spin, which keeps the draw in your hands and stops viewers from spamming spins.

Scene tips

• Give the wheel its own scene (or a nested scene) and switch to it for the draw, so it doesn't sit on your gameplay all stream.
• Use the Size and Position settings instead of stretching the source in OBS. The wheel is drawn at the right resolution and stays sharp.
• Put the spin sounds on their own track by ticking Control audio via OBS, then lower them in the mixer if they're too loud for your mic.
• Several prizes? Turn on "Remove the winner after each spin". Refresh the source (right-click, Refresh) to bring everyone back.
• Test first. Spin a couple of times before going live; the source keeps working through scene switches.