I'll make this as simple as possible:
This should have been a separate game and IMO it would have been an excellent pick for 20/30 EUR respectively. But it feels like SEGA was so greedy that they pretty much put a delicious sandwich (Shadow generations) into the same box as a sandwich which is on the verge of spoiling (Sonic Generations), just so they could TRY to justify such a price tag.

The graphics look great (only in Shadow's part), high frame-rate is supported (sadly, again, only in Shadow's part) and it's actually running well even on the Steam Deck (once again, primarily on Shadow's part...).

Now, for more details on the negatives:
- no ultrawide support
- original Sonic Generations feels like an afterthought
You launch the game and it seems like both the original Sonic Generations + Shadow generations have been blended in.
But if you pick Sonic Generations, it becomes clear that it's just acting like a glorified launcher for the original game - you get a black screen, terminal pop-up and it switches to the Sonic Generations game... the frame rate gets locked to 60FPS, random stuttery moments start to happen and the graphics seem just slightly worse (lighting, textures, etc.), enough to make something feel "off".

I was at least hoping we'd finally get an option for enabling unlimited frame-rate, but it seems like that is only reserved for the Shadow Generations part.

As much as I'm happy with the way Shadow Generations looks, I'm equally disappointed in the Sonic Generations bit because it's almost the exact same thing as the 2010 release, flaws included (60fps, stutters, the camera being too zoomed in on the character models).

My take:
Not recommended at full price. If it gets a decent discount, sure.

I'll make this as simple as possible: This should have been a separate game and IMO it would have been an excellent pick for 20/30 EUR respectively. But it feels like SEGA was so greedy that they pretty much put a delicious sandwich (Shadow generations) into the same box as a sandwich which is on the verge of spoiling (Sonic Generations), just so they could TRY to justify such a price tag. The graphics look great (only in Shadow's part), high frame-rate is supported (sadly, again, only in Shadow's part) and it's actually running well even on the Steam Deck (once again, primarily on Shadow's part...). Now, for more details on the negatives: - no ultrawide support - original Sonic Generations feels like an afterthought You launch the game and it seems like both the original Sonic Generations + Shadow generations have been blended in. But if you pick Sonic Generations, it becomes clear that it's just acting like a glorified launcher for the original game - you get a black screen, terminal pop-up and it switches to the Sonic Generations game... the frame rate gets locked to 60FPS, random stuttery moments start to happen and the graphics seem just slightly worse (lighting, textures, etc.), enough to make something feel "off". I was at least hoping we'd finally get an option for enabling unlimited frame-rate, but it seems like that is only reserved for the Shadow Generations part. As much as I'm happy with the way Shadow Generations looks, I'm equally disappointed in the Sonic Generations bit because it's almost the exact same thing as the 2010 release, flaws included (60fps, stutters, the camera being too zoomed in on the character models). My take: Not recommended at full price. If it gets a decent discount, sure.