More often than not, games are designed with an interface that lacks creativity and doesn't offer the player a more immersive experience, but instead takes them out of the flow of the gameplay. A game that can have mechanics with a fluid interface, or no interface at all, can be much more visually appealing to the player. Many games have basics on an interface such as health, ammo capacity, power-ups/abilities, and stamina/energy. These mechanics can often be portrayed in more aesthetic forms within the game. An example of a game that has a distracting interface is System Shock 2.
System Shock 2, a first-person shooter horror survival game, has an interface that is complex, cluttered, and overall visually unappealing. The user interface has numerous icons and statistics in addition to the basic health and ammo visuals, such as a map button, question mark icon for in-game help, equipped item icons, an additional screen display for hacking, and several other icons. This UI design distracts from the gameplay because there are so many icons cluttering the player's screen.
Example #2: Far Cry 3
As a FPS game, it is really annoying to have opaque elements floating on the gameplay field (mainly when a popup block appears in the center of the screen!). Also Far Cry 3 breaks player's immersion - through a lot of those popups in the middle of the game and they had so many submenus that the player gets tired trying to accessing it sometimes. I saw that a lot of players went for the option "turn the UI off" in this game...Example #3: 7 Days to Die The user interface in the 7 Days to Die is also complicated. For example, the game designers show the skills system with the user interface. However, there are more than ten kinds of skills player can learn in the game. Also, there are crafting menu, map menu and looting menu in the game. All of these make the user interface of 7 Days to Die complicated and annoying.