Zorin16 Beta is available and will be able to handle all but the latest ( except just released in the past 3months) hardware. Your best bet to minimize issues is to run the Beta. 15.3 is solid for hardware that is rougly a year old or older, but there was a gap in support for hardware, hence the many troubleshooting topics on the forum regarding issues.
You can get a copy of beta here:
You do not have to buy any version of Zorin. There is nothing in Zorin Ultimate that isn't in the regular Core or Lite versions (though software that would be bundled for your convenience will have to be downloaded separately in the Core or Lite versions). We choose to pay for Ultimate to support the development because we believe what they are doing. This choice is not tied to any specific feature offered by any specific version. They all do what the others do, though with a different desktop environment in the different versions (core/lite).
Until later this year (year's end is what I'm hearing) there is no way to "upgrade" from one version to the next. A clean install must be performed. If you do choose to install Zorin, it will be a clean install unless you wait until the end of the year. I would recommend this anyway, and to dual-boot between your favorite OS's (or necessary OS's depending on your point of view). I do recommend if you do a dual-boot, please follow the recommended partitioning here:
Steam can be downloaded on any version of Linux, though not all games work as intended, and still may require a win installation. For LegoWorld to work, you should be fine.
https://linuxconfig.org/how-to-install-steam-on-ubuntu-20-04-focal-fossa-linux
Lists the instructions for installing the linux version of steam, and will work for any distro (Zorin 16 included) based on Ubuntu 20.04
Edit:
Google is your friend, but it may take certain wording to get the results you want. Try preceding with how to and keep it as generic as possible, i.e. "how to install steam on linux" or if you know the os and version (even the base) :
"how to install steam on Ubuntu 20.04"
Gave me these results:
[
How to install Steam on Ubuntu 20.04 Focal Fossa Linux ...
https://linuxconfig.org › how-to-install-steam-on-ubunt...
](https://linuxconfig.org/how-to-install-steam-on-ubuntu-20-04-focal-fossa-linux)
May 3, 2020 — Install Steam from Ubuntu package repository. Confirm that the multiverse Ubuntu repository is enabled: $ sudo add-apt-repository multiverse $ sudo apt update. Install Steam package: $ sudo apt install steam. Use your desktop menu to start Steam or alternatively execute the following command: $ steam.
[
How to Install Steam on Ubuntu 20.04 | Linuxize
https://linuxize.com › post › how-to-install-steam-on-ub...
](https://linuxize.com/post/how-to-install-steam-on-ubuntu-20-04/)
Jul 7, 2020 — ... developed by Valve Corporation for purchasing and playing video games. This article explains how to install the Steam client on Ubuntu 20.04.
[
How to Install Steam in Ubuntu 20.04 – Linux Hint
https://linuxhint.com › install-steamos-on-ubuntu
](How to Install Steam in Ubuntu 20.04 – Linux Hint)
Step 1: Update and Upgrade System. Step 2: Enable Multiverse Repository. Step 3: Install Steam Package. Step 4: Launch Steam Application. Step 1: Download Official Steam Debian Package. Step 2: Install Steam Using Debian Package. Step 3: Launch Steam Application.
It would be the same in any search engine you use.
