Zanzlanz has 'pranked' his fanbase in a couple of ways for past April Fools' days.
Zanzlanz released a new version of Mine Blocks 2 and said that he added multiplayer, with the message below:
As most people already know, I've been working hard on getting multiplayer to work in Mine Blocks 2. I have posted numerous screenshots and updates on it on various sites. It is completely true. That's why it's not hard to believe that I'd release a sampling of multiplayer.
However if the player plays for 10 minutes, this appears on the screen:
April Fools! Multiplayer is still not released. Haha,sorry!
2013's April Fool's also included some "real" updates for Mine Blocks 2.
In 2014, Zanzlanz said that Mine Blocks was updated to 1.27 and he also posted a link. This was in the description of the update:
The newest features are multiplayer, Herobrine (he shows up when you summon him), and over 75 new lemon-themed items (including the lemon dimension and lemon dragon boss fight)! I fixed a few more bugs too. To join a multiplayer server, just login to the new update, click 'Play!', and select 'Multiplayer'. Type in your friend's IP address, and BOOM! :D
This was the screenshot Zanzlanz posted:
In 2016, Zanzlanz tweeted about the "Realistic Tree". This is what he said:
No one talks about the realistic tree item anymore. Here's how to craft, it if you forgot! :)
This is the image he posted: