A gameplay video from Serious Sam Classic: The First Encounter, that is using the OpenSource Vulkan Engine (version 1.10.5 from June 2023). Since then a newer version was released with numerous bug fixes and add-ons), but still, this did works for me on this computer configuration.
What you need to know about Serious Sam Classic: First Encounter? Well, the original game was developed in 2001 by CroTeam, a Croatian developer in Europe and published by Gathering of Developers. It was a big success. Since then Serious Sam became a big franchise and the developer was bought by Devolver Digital, their later partner and publisher.
Serious Sam Classic is an first person shooter with wide levels, similar to Painkiller, Necrovision on other shooter games.
Serious Sam: The First Encounter Statistics For WildApple / OP Plays
At this time, WildApple / OP Plays has 115 views for Serious Sam: The First Encounter spread across 1 video. His channel published less than an hour of Serious Sam: The First Encounter content, less than 0.22% of the total video content that WildApple / OP Plays has uploaded to YouTube.