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That is a fascinating speculation, and may well be the case. A famous example of what might have been could bring about substantial change in world maps. After winning, if Kaiser Wilhelm had territories fled for an effective establishment of the continent's capital would be relocated in the German territories.
The Germans 'depended' upon protection from attack on their own strict frontier before this an eventuality could have severe effects. It was possible that the harsh conditions imposed by the Treaty of Versailles would not have taken place, which would have prevented WWII and perhaps made a life for Hitler rather different.
What other kind of conflicts could have emerged to replace WWIII? A matter entirely of speculation and just these answers. But it is a fascinating theoretical game to play nonetheless.
A possible outcome of Germany's victory in WW1 could be the absence of restrictions placed on it by the Treaty of Versailles, which triggered significant resentment leading up to WW2. Avoiding these consequences could have potentially prevented the rise of Hitler and his regime, altering the course of history in profound ways. It's also reasonable to consider that Kaiser Wilhelm II might have solidified his central powers and Europe could be substantially more monarchic today.
If Germany had won WW1, the fallout would undeniably have been substantially different. It's likely that the punitive Treaty of Versailles would not exist, eliminating one of the key catalysts for WW2. Rather than Weimar Republic, Kaiser Wilhelm's reign might have persisted, which could've significantly influenced the political landscape of Europe.
With Germany as victors in WW1, many speculate the punitive Treaty of Versailles wouldn't have materialized, removing a major trigger for WW2. Possibilities include continued rule by Kaiser Wilhelm leading to a politically divergent Central Europe.
Germany winning WW1? Hmm, that means no Treaty of Versailles, possibly no cause for WW2, and a continuation of Kaiser Wilhelm's rule. How different the world might've been!