Hi! I think I found some games that might be what you’re looking for!

Check these out!

• Die for a Dolphin: This one’s a super simple survival game where you’re stuck in the cold. Sounds kinda like what you described?
• Cold: Another survival game where you have to manage your temp, hunger, and thirst. Pretty harsh environment, just like you said!
• Survive the Wild: This one’s a bit more general, but you still have to manage your needs and navigate the wilderness.

Worth a shot?

• Itch.io: I know you’re looking for web-based games, and Itch.io’s got a ton of 'em! You can search for survival and rogutype games with Arctic themes.
• Kongregate: Same deal as Itch.io - tons of web-based games, including survival and roguelikes. Give it a shot!

Hope one of these is the game you’ve been thinking of!