Had a look? Good.
Now you're up to speed, I'll crack on. Whilst perusing the net, which is something I've gotten quite good at in recent decades, I found another interesting little site that sort of does the same as X-Cult - reveals details of cancelled games for a multitude of formats...including our beloved Dreamcast. Before you groan, listen up: Unseen64 features previously...er...unseen pictures and screens of a few forgotten gems that would have been a credit to the DC had they been released, and even grabs of a few games I've never actually heard of...
Take the Bullet
Quark
Shrapnel: Urban Warfare 2025
Spiral Nightmare Type X
Jump Runner
Akolyte
Innocent Tears
Ecco 2: Sentinels of the Universe
Dark Angel
Gorka Morka
Agartha
Of course, this little collection is just the tip of the iceberg - there's even more beta action at the actual site, and that includes some rather interesting shots of an early Metropolis Street Racer and a massive Shenmue archive. Granted, explanations of the titles shown are either non existent or written in Italian (which is fine if you can read Italian...which I can't) so you have to make assumptions about how some of the games may have played by sight alone. Still, very cool, if that's yer bag.
Quark
Shrapnel: Urban Warfare 2025
Spiral Nightmare Type X
Jump Runner
Akolyte
Boarder Zone
Innocent Tears
Ecco 2: Sentinels of the Universe
Dark Angel
Gorka Morka
Agartha