Time Master

Well, looks like I finally settled in! Anyways...

Tmeliner (known as タイムラインの攻撃の攻撃Taimurain no kōgeki no kōgeki, lit. Timeline Assault Attack in Japan) is a Tactical-2D Action RPG for the latset Nintendo systems!

Before era
The story starts with an old man named Ryoko who is putting up a "get together" and is going through different worlds to invite his friends! There are several worlds to access at this point.

Chuck's (Sonic's) World
Ryoko goes to Chuck's World (before his roboticization) where he found several of enemies called "Splicers" ("Chromers" in the Japanese version) and begins battle. After defeating a raid of enemies and the boss, he gives Chuck an invitation letter then teleports out of the world.

Toadsworth's (Mario's) World
Ryoko goes to Toadsworth's World (in his younger appearance) where he once again found some enemies. He fought them off then gave Toadsworth an invitation then teleports.

Pokemon World
Ryoko (meaning Traveler) goes to the Pokemon World where yet again found more enemies. After yet again defeated all of them, he took moment to think about why all of these Splicers appearing. He gave each Gym Leaders an invitation then teleports.

Blue's (Joe's) World
Ryoko goes to Blue's World (in his younger appearance) and fights off against enemies and a boss, then gives Blue the invitation, then teleports.

2nd Dimension (2ndD)
When he finally figured out the reason, he goes to the 2ndD to fight Gigas, lord of time splicing. You have to go through 5 Floors to fight Gigas, but there ARE 55.5% chances that a Save & Shop Floor will appear along with a 25.5% chance of a Treasure Floor appearing. You finally reach the Last Floor where you say that so many Splicers appear because they where attempting to alter all Worlds and if it weren't for the idea of a "get together", Gigas would've had the whole universe in his hands. You then face off against him. He's pretty tough in the beginning. :/ But then you sacrafice yourself to save the universe but to only injure Gigas.

Classic era
A boy named Shindo (meaning Prodigy) is born in 1989 and several years later, he's 10 years old. It's 1999 and while playing Sonic The Hedgehog on his Sega Genesis, Sonic pops out and grabs Shindo's arm and pulls him in to another universe.

Sonic's World
Shindo, highly confused, asks Sonic why he's here. Sonic says he's has a gift, and the universe is in danger! Shindo agrees to help this universe then a Tutorial starts. After minutes of Tutorific gameplay, you and Sonic go on to help Tails, Amy, and Knuckles. You see a Master Emerald, but suddenly!...it shatters...it was Eggman! He then sends and scatters the Master Emerald across the universe. You also then face him and defeat him. Sonic and his friends thanks Shindo and teaches him how to teleport. He just focuses on the place he wants to go then BAM! he's there. :) Shindo can also call his friends he rescued anytime in the Battle Field by using another type of Cards called Friend Cards. Note: In the Modern era, Sonic and his friends can teleport anywhere in their World by using a new invention called the Warp Watch. This is also featured in Sonic 20.

Mario's World
At this point, you can now access several Worlds, but going here will bring up more Tutorials, but it'll be explained later. Shindo arrives at Mario's World where he finds him surrounded by Splicers and attempts to rescue him. Now for the Tutorial! You have to rescue people from being altered and the "rescue missions" are treated as Floors (which explains how Sonic's friends opened Floor Steps). After battling an enemy (doesn't have to be KOed (KO'd in the Japanese version)), Mario defeats several surrounding Splicers with a spin attack. Mario then moves on to catch-up to you. After defeating all enemies Mario shakes your hand as a thank you. You then move on to rescue his friends. You obtain a Master Emerald Shard from Yoshi, collect them all and the Master Emerald will be restored! You also get plenty of extremely rare stuff for doing that!! XD You face Bowser and defeat him, then you teleport out of there. The same cycle on other Worlds continues from there until the last World you beat when a cutscene kicks in. The 2ndD is then available to access.

2ndD
There are 10 Floors this time and as you reach the Last Floor, you see Gigas injured. He saids that he wants you're power in order to recover and take over the universe. You then proccd to fight him. After you defeated him, you seal him with your power. Then everything's back to normal!

Modern era
It's 2004 and the Dreamcast discontinued! You're 15 years old, you just started High School and when you opened the door, you see Sonic, Mario, and other video game characters! -To be continued-

Systems

 * Wii U
 * Nintendo 3DS

Trivia

 * If anyone else want's to add a world on any of the "Timelines", be my guest.