The demo door opened and the room tightened. I felt the hush before the first boss telegraphed a move. You could tell, right away, whether the fight would be fair or cruel.
I was at the Paris preview in June and I played through a slice of what Konami is calling Castlevania: Belmont’s Curse. Today Konami confirmed a free demo drops on Oct. 1—exactly two weeks before the full release on Oct. 15—and yes, you can carry progress from that demo into the finished game, as long as you stay on the same platform.
Download sizes are small by modern standards: Steam is about 4GB, PlayStation 5 sits around 6GB, and Xbox needs roughly 5GB. The demo is free to grab from the Konami demo page, so you can test the combat and puzzles without paying a cent.

The Steam progress bar showed 4GB and I remembered the Paris demo.
The size numbers map to what I played: a compact sequence that still had three boss encounters, multiple stages, and enough puzzles to make you slow down. If you’re on Steam, PS5, or Xbox you can expect a quick grab-and-play experience that nevertheless sketches out the game’s pacing and combat loops.
How long is the Castlevania: Belmont’s Curse demo?
Konami hasn’t published an official runtime, but my preview session in Paris clocked just a bit over three hours and included three bosses, a handful of secrets, and dense puzzle work. That’s the low bar; Konami could expand the demo beyond the main gate before Oct. 1, so your playtime might stretch longer.
The demo kiosk in Paris had a Joan of Arc poster taped to the wall.
The presentation felt focused. Bosses hit with distinct patterns, level design fed you curiosities to follow, and secrets rewarded experimental inputs. The demo was tight enough that every discovery mattered; it felt like a tightly written short story where every scene earns a purpose.
Can I transfer demo progress to the full game?
Yes — but there’s a catch. Progress carries over only if you play both the demo and the full release on the same platform. That means demoing on PC won’t seed progress to your PS5 copy. It’s a small but appreciated gesture from Konami that rewards early commitment.
The Oct. 1 demo announcement landed on Konami’s site and a Steam page the same day.
Konami is using a two-week demo window before the Oct. 15 launch to let players sample the pacing and cosmetics, while still keeping the main experience a fresh purchase. That two-week gap is like a pressure cooker—short enough to maintain interest, long enough for buzz to spread across Steam forums, subreddit threads, and influencer streams on Twitch or YouTube.
If you want my advice: try the demo on the platform you intend to buy, poke every secret, and treat the demo as a way to test whether the combat rhythm clicks for you. Will you download the demo and carry your progress into the full game, or will you wait until release day to judge for yourself?