Rumble Studios./Bubble Gum Simulator

Bubble Gum Simulator is a game/simulator made by Rumble Studios. A popular development group that made multiple other popular games such as Mining Simulator. The main idea is to blow bubble gum until your 'bag' is full and sell your loot to get coins. You can upgrade your bag in the "Gum" tab in the shop menu, and you can upgrade how much bubble gum you get for clicking in the "Flavors" tab.

The bubble you have can be used as a balloon, in the sense that you can jump higher and you can jump on clouds to unlock new islands/areas high in the sky. You can also upgrade your stats by opening eggs. Eggs contain pets ranging from common rarity, to ??? rarity which is known as a legendary, the percentage that you can get a legendary out of an egg is low but it depends on the type of egg. Pets have three to four different stats. You can also trade your pet(s) with other players.

Islands
There are seven islands in the first world that are accessible via jumping on clouds (The last 2 are very difficult and they are almost impossible to climb), and 5 islands in every other world, so you need to have a big enough bubble to be able to jump high enough to platform up to the clouds. The clouds become more spaced apart the higher up you go (Last 2 barely have any clouds at all). Each island has its own special things different from other islands for example eggs, and chests, and some might even have an exchanging island. Reaching an island unlocks its respective portal at the main island that is always accessible to you after you unlock it. Chests can be respawned instantly by spending Robux or by waiting for it to respawn; if you have the VIP gamepass the time it takes for the chest to spawn will be reduced by 20%

Fame
Its popularity grew in 2017 to 2019. It had about 50k to 100k playing online. Now it still has a tremendous 20k playing online.

List of Islands
Entrances: Main Island-Spawn

The Floating Island-Hub Portal

Space-Hub Portal

The Twilight-Hub Portal

The Skylands-Hub Portal

The Void-Hub Portal

Zen-Portal at the left back side of The Skylands

XP Island-Portal at the right side on The Void

Gum
Gum acts as a bag for your bubbles.

Underworld Shop
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Faces
Faces are used to increase the number of bubbles you blowing at once.

Flavors
Flavors are used to upgrade the number of bubbles you obtain for clicking.

Titles
Titles appear above your username. You can choose title you want above you head by clicking the Items button, and then Titles button that is on right top of the Items menu.

Pets/Eggs
Pets are some of the main collectibles of the game. Eggs are found in a few of the islands and the spawn and cost coins and gems.

Pet Rarities

 * Common
 * Unique
 * Rare
 * Epic
 * ??? (Legendary)
 * Mythic (Variants of ??? (Legendary))
 * Secret

Index
The Index shows what pets you have hatched from an egg and what pets you haven't hatched from an egg. It does not show exclusive code pets or other limited pets and it does not show pets from eggs that cost Robux. You can find it on the left side beside Prizes.

Paid Shop
The Paid Shop is where you can buy Coins and Gems with Robux.

Codes
Codes are found on Isaac's (The developer) Twitter (IsaacRBLX) and their Twitch Channel (Rumble Studios) and will give users in-game currency and, on rare occasions, an exclusive item/pet. Your account must be 5 days old to redeem most of the codes. You can find a list of codes here.

Game passes
These are permanent upgrades that do various things in-game.

Badges
Badges are awarded when a player reaches a rank. There is also an additional three badges for amounts of pets.

Trading
Trading is one of the features in Bubble Gum Simulator, and allows you to trade pets to other players on the server. The button is located just above the settings menu in the bottom right corner. You can also disable receiving trade requests by clicking the button on the bottom in the trade menu. You need to open 3,000 eggs in order to trade

Trivia

 * For April Fools' Day of 2020, the title of the game was changed to "🔥 bable gam sim 🔥".
 * After playing the game for a while, many players consider it an "egg opening simulator", rather than an actual bubble gum simulator, and thus, on April Fools 2019, Bubble Gum Simulator's name was changed to Egg Opening Simulator.