as long as entry is free and the prize is in btc
That is mandatory to make
BTC as prizes?
Maybe OP hasn't read the rules in the pinned post, and you can see it directly on the corner or top title of the Games&Round, faster you can go through the quote below
:Giveaways, games, raffles, airdrops and other promotional campaigns that pay out a part or all of their rewards in altcoins do
not belong in Games and Rounds. Giveaways and other similar promotional campaigns that pay out in altcoins
and do
not require users to post in your thread / topic to participate can be be posted in
Bounties (Altcoins). Make sure to read the stickied threads in the aforementioned board before you post there.
Giveaways that require users to post in one or more specific threads / topics in exchange for altcoins are
prohibited forum-wide. The
same forum-wide restrictions apply to social media / bounty campaigns that require a user to complete a low effort task (e.g. liking, following, subscribing, retweeting, tweeting a single tweet, joining a channel or group, etc.)
and post in one or more specific threads / topics (either as a direct requirement or as proof of participation) in exchange for altcoins.
I hope you read all the rules, and if you want to ask about it, you can ask here so I hope that users who are experienced in it can also help you answer it, and coincidentally I am also a user who has visited there several times, so I am ready to follow as well if you run an event there if that is possible.