LEGO Island is one of the first video games I ever finished as a young person. It may have been the first, though I spiritually let Star Fox 64 have that spot. Looking back, considering my own time with the game decades ago as well as a classic Giant Bomb piece of coverage led by Drew Scanlon, LEGO Island sticks out as charming, surprisingly expressive children's media that probably isn't worth sharing with your own kids.
What jumps to mind most quickly is the game's bright, colorful world and silly sense of humor. LEGO Island takes place on a tight, primary coloured map wit about a dozen (incidentally talking) characters. The game could be said to indulge in some stereotypes towards persons of Italian descent, but never winds up feeling as mean or pointed as something like Final Fantasy XV's token journalist from Fantasy East Rutherford. It's a well realized space given its technological constraints and target audience.
The LEGO license is utilized well to facilitate a lot of simple creative tools for younger players. Over the course of the game players are allowed to build, recolour, and manipulate several LEGO creations. Young players are thereby able to put a lot of themselves and their vision into the world. It doesn't go as far with its creative tools as, say, Mario Paint, nor would it replace even a medium sized batch of actual LEGO for its raw creative fuel potential, but the extent to which player expression is encouraged in the game sticks out as forward thinking and somewhat admirable.
However, as this game approaches its thirtieth anniversary, is has ultimately been lapped by other games targeted at children with even more robust creative tools. The amount of emergent, expressive play even in base level Minecraft far surpasses anything in LEGO Island, to say nothing of the immersive and interactive play that is possible in that space. I can't speak for Roblox, but trying to sell a young person on LEGO Island who has been exposed to either of those games will likely not endear them to this piece of vintage software. And that's before you consider getting this to run in contemporary builds of Windows, a not-impossible task which nevertheless will yield at most an hour or two of content.
LEGO Island is a nice memory and should probably stay there. Later LEGO games, or even a nice pile of the bricks themselves, are better uses of your time at this point.