This one struck me as i stumbled over it on Steam, bought it out of an impulse to re-live my older memories with it. A true classic. I remember it as one of my first RTS to start into PC-Gaming, nevertheless i've played it on PS1 and even the N64-Version. Some memories relate not only to the game but to the overall experience of forming my popcultural behaviour in those days - my classmate and i used to really dig into the trash-heavy story and characters and mumbled "Ion Canon ready..." all day long. So i was - and still am - a little biased to it's quality.

Now, during the replay, i really had a good time. There was this eagerness of completing all the missions for both GDI and NOD, always on the brink of getting to the next super-cheesy and trashy cutscene. Although i could watch all of them on YT or the like, i really was command through both campaigns of the first one. Well - almost. I abandoned the NOD-campaign in the 2/3 after trying one of the most diffictult missions, I'd say (the one, where you have to land your troops under fire, secure the base, somehow survive and then even annihilate the enemy - as always). But i am fine with that. For the second title it finished both campaigns. Both times i opted for the classic, "normal" difficulty-level, as far as i could get. I can not believe i made it back in the days on the N64.

Gameplaywise i still liked the simplicity of everything - not too many unit-types, understandable systems of rock-paper-scissors... the game-speed actually was one issue, because i couldn't remember the actual speed. So i was shifting from slower to faster and back again. Pathfind can be annyoing, so speeding up came in handy.
Every map is more like a puzzle, which wants to be solved in terms of where to send your troups, if there's a second, sneaky-ish way into the enemy base and the like. I also like, that it's not a super-easy way to just built certain units en masse and roll-over the enemy. It always is a valid option to combine, check you airforce or pull of some engineer-shenanegans (hijacking the enemy main-building, selling it the next second - ooooh, now you're days are numbered, boy!)
For the second installment, Red Alert, i recognized the relativi simple changes when it comes to unit types. "So GDI had the Mammoth-Tank? Now the Russians have it."
Graphics in HD still hold up and are quite a nice update - to be honest, in direct comparison to the old one (skippable with one button) only like that enjoyable. So no nostalgic fallback to the old models if not for more than a few times.
I did not - neither back in the days, nor now - tried out multiplayer, so nothing to add here. I can imagine it's fun too, due to balancing and the beforementioned small cadre of units and mechanics.
So after all: a nice trip back down memory lane - nice to see you again, Kane, you charismatic Ba*tard!