The Hook-Up Game
An honest look at the odds. Make some choices, see your real-world chance of an STI this year — then roll the dice.
Educational model for ages 18–35. Not medical advice.
Step 1 of 5
What's your anatomy?
This shapes how easily infections transmit to you. We keep it clinical.
Step 2 of 5
Your partners have…
Pick "both" if you're bi or pan — we'll use the higher-risk pairing.
Step 3 of 5
Who are you hooking up with?
Pick the type of partner you'll have this year — then choose how many.
1
Step 4 of 5
Do you use condoms?
One setting for all partners. It matters a lot for some STIs — and barely at all for others.
Step 5 of 5
Have you had the HPV vaccine?
HPV is the most common STI by far. The vaccine prevents most high-risk strains — it's the biggest lever on your odds.
Your year
Your odds of an STI this year
0%
See the full breakdown
Rolling the dice…
Tweak your choices, then roll again
Partner type
Number of partners
1
Condoms
HPV vaccine
Educational model based on population-level CDC/NHANES estimates. It cannot predict any real individual's risk and is not medical advice.