Mystery Box Websites
Although checking out a mystery box website is not technically a browser game, it's become synonymous with the kind of fun and non-conformist contemporary online experiences that traditional browser games inhabit--a realm where gamers and tech-savvy generations of today go to play games and entertain themselves while potentially earning rewards in the process.

This initiative is a great way to pass the time and earn some great prizes while doing so. For example, many of these websites offer gamified experiences and add a layer of mystery (as the title suggests) when it comes to the type of 'winnings' players earn. With some sites, players can also earn virtual rewards together with the potential of winning a physical prize. From cute items to rare collectibles, there are appealing and potentially lucrative options for everyone.

A Dark Room
If you are a fan of RPGs and survival games, then A Dark Room might be right up your alley. The game begins with you waking up in a strange, cold room after a major event just went down. From here, the open-source text-based game unravels and eventually spirals into an intricate narrative with simplistic visuals where players can explore the world, collect resources and even interact with other characters.

Townscaper
After a long day at work, or if you are just looking for a stress reliever, Townscaper is a great way to unwind. The game has no objectives and allows users creative freedom to build large, colorful towns across an ocean with one click. While there are no real challenges, there are rules that need to be followed when constructing your town, alongside the materials being used.

Kingdom of Loathing
Offering players humor, turn-based combat, and a unique RPG experience, Kingdom of Loathing is an unforgettable game with a tick-figure art style where players can find some funny pop culture references and Easter eggs. Furthermore, the game is multiplayer, which means you can fight monsters and earn meat (the game's version of money) alongside your friends. In total, the game offers 77 hours of gameplay, meaning you have days' worth of entertainment a few clicks away.

Slither.io
If you enjoyed the classic mobile game Snake, then Slither.io will be perfect for you. The game is inspired by Snake and follows a similar gameplay wherein players are thrown into a multiplayer arena. Here, you have to avoid being eaten by snakes bigger than yourself while seeking out glowing orbs to help you grow bigger. While the game is quite straightforward, it can prove to be addictive and keep you busy for hours at a time as you try to unlock new skins and forms.

The Wiki Game
For puzzle enthusiasts, The Wiki Game is a perfect way to get rid of boredom when you have nothing to do. Furthermore, it is a great way to challenge the way your brain works and has a very simple concept for doing so: navigate Wikipedia as quickly as possible. Players are given a target article and are challenged with clicking through various pages to reach it. The game monitors your navigation speed and the number of articles you click through. Your goal is to achieve the lowest time or clicks possible.

Surviv.io
This top-down 2D battle royale game is a great way to have fun with friends without having to whip out your console or PC, and it offers players a fast-paced gaming experience where they can scavenge for supplies and weapons while trying to survive. Released in 2017, the game runs smoothly on most browsers and can be accessed from almost any device. Additionally, you can opt to battle zombies and other fun creatures or enter quick matches if you want to break away from the battle royale format for a bit.

Zombs.io
For players who enjoy classics like Left4Dead and Resident Evil because of the zombie aspect, then this is perfect for you. This is a tower defense MMO (Massively Multiplayer Online) game that prompts you to build a defense against multiple waves of zombies. Despite being a browser game, there is in-game progression that you can save as you collect resources and grow your defense, and the added multiplayer features make for an in-depth and unique gaming experience that is perfect when you are trying to pass the time.