Retro Games Tournament

About
The Retro Games tournament is a tournament on Angry Birds Friends!. It happened in: It's a retro-styled tournament, containing various things from old games such as Pac-Man, Megaman, etc. The Super Mario Pig was introduced in the 2019 tournament and replaces the main theme with an excerpt from Field of Greens from Retry, a discontinued game from Rovio Entertainment.
 * Tournament 2015: (March 2nd  to March 8th, 2015)
 * Octournament 2019: (June 17th to June 19th, 2019)
 * Tournament 2 2019 (June 20th to June 21st, 2019)
 * Tournament 3 2019 (June 22nd to June 23rd, 2019)
 * Octournament 2020 (February 17 to February 19th 2020)
 * Tournament 2 2020 (February 20th to February 21st 2020)
 * Tournament 3 2020 (February 22nd to February 23rd 2020)

2015 Tournament
The whole background is 16-Bit styled. There are a bunch of snowy mountains and the Crown Mountains in the background. There are also bushes in both the background and foreground.

2019 Tournament
It's an electronic background which is a net with a bunch of connections with glowing spots that are blue. In the foreground, there are 16-bit bricks.

New features
It featured several things such as:

New Pigs: Miscellaneous:
 * Super Mario Pig: A strong 16-Bit pig, which drops coins and makes a pipe warp  sound when defeated. He is based on Mario but lacks the M on the hat.
 * Pixels: Comes in various colors. They are easy to destroy.
 * Coins: Easy to destroy objects which make a sound that is similar to the one from Mario.
 * Hearts: Easy to destroy objects which give 5000 points when destroyed.
 * Orange Rupee: Easy to destroy objects which give 5000 points when destroyed. They are based on the ones from The Legend Of Zelda.
 * Atari Breakout Ball: They are 16-Bit easy to destroy objects and give 5000 points when destroyed, they can bounce.
 * Coin Block: They are 16-Bit easy to destroy objects and are from Super Mario Bros .  They were Exclamation Blocks in the 2015 tournament but are Interrogation Blocks in the 2019 one.
 * Cherry: They are 16-Bit easy to destroy objects and are based on the ones from Pacman.
 * Megaman Hat: A pig's wear.
 * Band: A pig's wear. They are based on the one that Spirits Bill wears in the game Contra.
 * Link Hat:  A pig's wear. They are based on the one that Link wears in the game The Legend Of Zelda.
 * Sonic Quills Hat: Another pig's wear. It's from Sonic The Hedgehog.
 * Super Sonic Quills Another pig's wear. It's from Sonic The Hedgehog.
 * Dr. Eggman Pig: An angry pig with orange moustache and goggles. Also from Sonic The Hedgehog.
 * Master Sword: Another easy to destroy object. It's based on the one from The Legend Of Zelda.
 * Jumpman Hammer: Another easy to destroy object. It's based on the one from Donkey Kong.
 * Red Potion: Another easy to destroy object.

Allusions

 * In some levels, there are structures that resmble the castle from Super Mario Bros, for exemple, level 2 of Tournament 1 2015.
 * In the levels, there's a pixel art structure that resembles the aliens from Space Invaders.
 * In level 3 of Tournament 1 resembles Atari Breakout.
 * In level 5 of Tournament 1,there's a Pixel Art structure that resembles Bubble Bobble.
 * In some levels, there are structures that resemble Pac-Man.
 * In levels of Tournament 2 and 3, there's a structure that resembles the castle of Hyrule from The Legend Of Zelda.
 * In levels of Tournament 2 and 3, there's a structure that resmbles the first level of the arcade version of  Donkey Kong.
 * In levels of Tournament 2 and 3, there are pixel art structures that resemble the Mushrooms from Super Mario World.
 * In levels, there's an orange pixel art structure that resembles Samus from Metroid.
 * Most of the levels
 * In level 3 of Tournament 3 2020, there's a blue pixel art structure that resembles the sprite of Sonic in Sonic The Hedgehog 3 and & Knuckles Sonic & Knuckles
 * Along with it, Dr. Eggman pig is in a stone mobile with a claw that is holding a rupee, which resembles Dr. Eggman stealing the Master Emerald in his Egg Mobile.
 * Some levels of Tournament 3 2020 resemble various parts of Sonic The Hedgehog.