This will go by the timeline, so follow along as much as possible (This is our second most popular series)
Picture Frame Alleyways: Picture Frame Alleyways is a game following Victor, there are 20 endings, this game splits the series into 3 timelines, Slow (PFVTTA), Destroyed Europe (PFB), and Canon (PF). Each timeline is different, the slow timeline is what happens if the anomaly outbreak picks up after Victor finds his group. Destroyed Europe is if he doesn't begin the prophesied story when needed. Finally, the canon ending is if the prophecy starts perfectly.
Picture Frame 1 & 2: PF1 & 2 take place in the Canon Timeline, they follow Victor investigating the Anomuseum, when he exits the Anomuseum property, he enters the Woods of Eternal Pain south of the establishment, then he's in serious danger.
 Picture Frame Basement: PFB takes place in the Destroyed Europe Timeline, he enters the basement and witnesses the horrible crimes that the infector anomalies have committed. These include hanged victims, death pits, fake imprisonment, and many more. The biggest crime they committed is poisoning victims, Victor must escape and help Europe fight the anomalies.
Picture Frame Venture to the Abyss: PFVTTA follows 5 characters, these include Victor, Abia, Vinn, Vulcan, and Neptune. Each character has its own story, but they all want one thing: to end the anomaly virus. After their encounters, they meet and team up to fight the infector anomalies and others, Vinn sacrifices himself to the Prisoner (final boss) of the game to save the world, his funeral is attended by everyone, and they visit the grave every month.
Picture Frame Downfall: PFD takes place immediately after PFB, Victor saves Europe from the anomalies with the help of the European Governments, and the game ends with a cliffhanger.
Picture Frame 3: PF3 follows Victor after the events of PF2, it's the second to last PF game, he now has to defeat the guardian of the woods, when he does, the forest falls and is replaced by a beautiful recreation, the new guardian being much kinder than the first. The game ends with a silhouette of Abia, hinting at her role in PFTE. The game takes place after the Timeline Reconnection.
Picture Frame True Ending: This game is the final PF game, taking place after PF3, when you beat the game, you either get the good ending or bad ending, the bad ending is when you die, the good ending leads to Victor and Abia sitting on a bench at a park with smiles on their faces.